Year	% female
1970	50.82613
1971	51.65636
1973	52.31782
1975	50.77118
1976	51.27253
1977	51.53267
1978	51.57638
1979	51.58253
1980	51.51791
1981	51.18315
1982	50.90673
1983	50.60957
1984	50.57839
1985	50.70352
1986	50.38013
1987	50.09736
1988	50.14399
1989	50.07635
1990	50.08801
1991	50.05735
1992	49.75652
1993	49.8376
1994	49.05774
1995	52.47371
2007	49.81764
2008	49.88832
2009	49.88376
2016	48.50495
2017	48.58072